<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登陆表单 -->
            <el-form ref="LoginFromRef" class="login_form" :model="loginForm" :rules="loginFormRules">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input v-model='loginForm.username' prefix-icon="el-icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input type="password" v-model='loginForm.password' prefix-icon="el-icon-lock"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginFrom">重置</el-button>
                </el-form-item>
            </el-form>

        </div>
    </div>
</template>

<script>
export default {
  data () {
    return {
      // 这是登陆表单的数据绑定对象
      loginForm: {
        username: '',
        password: ''
      },
      // 表单验证鬼册
      loginFormRules: {
        // 验证用户名合法
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码合法
        password: [
          { required: true, message: '请输入登陆密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginFrom () {
      // console.log(this);
      this.$refs.LoginFromRef.resetFields()
    },
    login () {
      this.$refs.LoginFromRef.validate(async (valid) => {
        if (!valid) return
        const { data: result } = await this.$http.post('login', this.loginForm)
        if (result.meta.status !== 200) {
          console.log('登录json：')
          console.log(result)
          return this.$message.error('登陆失败')
        }
        this.$message.success('登陆成功')
        // 保存token到sessionStorage
        console.log('登录json：')
        console.log(result)
        window.sessionStorage.setItem('token', result.data.token)
        // 页面跳转到主页
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
    .login_container {
        background-color: #2b4b6b;
        height: 100%;
    }

    .login_box {
        width: 480px;
        height: 310px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
    }

    .login_box .avatar_box {
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    .login_box .avatar_box img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }

    .btns {
        display: flex;
        justify-content: flex-end;
    }

    .login_form {
        position: absolute;
        bottom: 0;
        width: 100%;
        padding: 20px;
        box-sizing: border-box;
    }
</style>
